| Term | Definition |
|---|
| topography | terrain of the land |
| contour lines | lines that show areas of equal elevation |
| contour interval | how much vertical increase each line shows |
| the great divide | in the middle of the USA following the mountain patterns the basic water shed pattern splits so if it rains on one half it will go to atlantic and on the other pacific |
| watershed | an area of land that drains to a body of water |
| hypoxia | when dissolved oxygen in water is less than 10% |
| H:#1 | large amount of nitrogen introduced i.e. runoff from farm fertilizers |
| H:#2 | algae bloom (level of oxygen goes up) plants grow |
| H:#3 | fish population explosion due to increased food |
| H:#4 | algae death (due to less oxygen b/c nitrogen was limited (suply) |
| H:#5 | fish death because of less oxygen and food |
| biomagnification | there is so much mercury in water, all fish have that level, 2 small fish are eaten by medium fish, 2 medium fish are eaten by big fish; you eat big fish, friend eats 2 medium, you recieved less mercury b/c the big fish already had some mercury plus 2 medium fish |
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